【摘 要】
：
A new noncentrosymmetric phosphide ThIrP has been synthesized and characterized.X-ray diffraction analysis shows that this compound crystallizes in a LaPtSi-type tetragonal lattice(space group I41md,Z=4),whose lattice parameters are a=b=4.0676(1)?,c=14.33
【机 构】
：
Department of Physics,Zhejiang University,Hangzhou 310027,China;School of Science,Westlake Universit
【出 处】
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中国科学：物理学 力学 天文学（英文版）
论文部分内容阅读
A new noncentrosymmetric phosphide ThIrP has been synthesized and characterized.X-ray diffraction analysis shows that this compound crystallizes in a LaPtSi-type tetragonal lattice(space group I41md,Z=4),whose lattice parameters are a=b=4.0676(1)?,c=14.3354(2)?,and V=237.191(8)?3.Moreover,ThIrP is discovered to be an intermediately coupled,type-Ⅱ superconductor with possibly multiple gaps below Tc=5.07 K.The upper critical magnetic field,Sommerfield coef-ficient,and Ginzburg-Laudau parameter are determined based on physical property measurements,which are Bc2=0.83 T,y=7.5 mJ mol-1 K-2,and kGL=7.5,respectively.The electronic band structure calculations point out nearly equal contributions of Ir and Th atoms on the density of states around the Fermi surface.In addition,the spin-orbit coupling induced band splitting reaches as large as 270 meV along the Γ-Z line.Our results suggest that ThIrP provides a platform to study the interplay between inversion-symmetry breaking,strong spin-orbit coupling,and superconductivity.
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